Question 1

can i use it on canon 5d mark ii?

Accepted Answer

Yes, but most of us bought it because we can't afford a 5D Mark II.  You'd probably be happier with the $250-$300 active extensions, which allow focus and aperture changes with it attached.  (this cheap metal tube does not)

Question 2

What will happen to the picture quality if the "inner glass" is removed? Also, whats the difference between this one and the other ones on the market??

Accepted Answer

After much testing with Canon FD 300mm prime and Tamron 500 reflex. 2 inner lenses destroys the sharpness. Removing both you lose infinity on Canon but not reflex lenses. Keep the thick inner lens remove the thin one. Perfect. Except now MFD is a little greater. Not important. Sharpness! Remove both for all common reflex lenses still keep infinity.

Question 3

Does this mount directly to the body?  I have a macro lens that I just bought but it is one the screws on to an adapter.  Will this work?

Accepted Answer

It doesn't fit directly onto the body of the Canon EOS M. YOu will need the mount adapter EF EOS M. I bought this with the 0.43x wide angle macro lens 58mm that screws onto the front of my lens.  It dose not fit the wide angle macro lens that I bought with it.  The wide angle macro lens fits onto the front of my Canon EFS 55-250mm lens. I bought it so I would have the option since it is cheap enough and it gives different results. But since it is manual and it doesn't communicate with my camera, the EOS M sends out a message that a lens is not attached to the camera. However, if you can get it to work with your camera, you can get real close with your zoom lens.

Question 4

Will this extension fit on my Canon Rebel t3i?

Accepted Answer

Miss: Alyssa C.  My one and only experience has been with the Canon Rebel T3.  However, on 30Jan2014 I bought a wide angle lens for my T3. The lens was for a T3i.  It fitted just right.  It works great in photography involving flowers.

ASIN	B001G4QXN2
Aspect Ratio	Unknown
Best Sellers Rank	#45 in Camera Lens Adapters & Converters
Brand	Fotodiox
Built-In Media	Fotodiox Lens Mount Adapter
Camera Lens	42 millimetres
Compatible Camera Models	Canon EOS DSLR cameras with EF or EF-S mounts
Compatible Camera Mount	Canon EOS (EF, EF-S)
Customer Reviews	4.6 4.6 out of 5 stars (365)
Focal Length Description	0.01 millimeters
Focus Type	Manual Focus
Global Trade Identification Number	00812759010380
Image stabilization	Digital
Item Type Name	Lens adapter.
Item Weight	20 g
Lens	interchangeable
Lens Design	Prime
Lens Fixed Focal Length	35 millimeters
Lens Mount	M42
Manufacturer	Fotodiox Inc.
Manufacturer Part Number	07LAm42eosB
Maximum Focal Length	0.01 millimeters
Maximum Shutter Speed	1/4000 seconds
Minimum Focal Length	0.01 millimeters
Model Name	Fotodiox
Model Number	M42-EF-V1
Number of Items	1
UPC	812759010380 703341545543
Warranty Description	All products carry a 2 Year/24 month Limited Warranty from Fotodiox from date of purchase. Our limited warranty provides coverage for defects in manufacturing only. Our limited warranty expressly excludes coverage for excessive wear and tear and/or physical/accidental abuse, loss or theft. The limited warranty not applicable on consumable items, clearance items as marked, and items bought from una…

Fotodiox Lens Mount Adapter - Compatible with Black M42 (42mm x1 Thread Mount) Lens to Canon EOS (EF, EF-S) Mount D/SLR Cameras

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